The Model 231 Multi-Sense from Setra Systems Inc., Boxborough, MA, is a wet-to-wet differential pressure transducer. Features include switch-selectable pressure ranges, selectable analog outputs (2-wire 4–20 mA, 3-wire 0–5 VDC, 0–10 VDC, and 1–5 VDC), and unidirectional and bidirectional ranging of span. An LCD is optional. There are three versions: the MS1 with ranges from ±5 psid to 50 psid; the MS2 with ranges from ±10 psid up to 100 psid; and the MS3 with ranges from ±25 psid to 250 psid. All versions feature temperature compensation and zero and span accurate to within 0.02%/°F.
Setra Systems Inc.